Why Are We Still Isolating Vaccinated People for 10 Days?

For most fully vaccinated people, a breakthrough coronavirus infection will not ruin their health. It will, however, assuming that they follow all the relevant guidelines, ruin at least a week of their life.

That very frustrating week began for Joe Russell on November 11, the day he found out he’d tested positive for the virus, just one month after getting a Pfizer booster, and about five or six days after he’d first felt an annoying tickle in his throat. Russell, a 35-year-old hospital-supply technician in Minnesota, dutifully cloistered himself in his basement, far from his fully vaccinated wife and his fully unvaccinated 2-year-old son, and phoned in sick to work. He stayed there through the 15th—the requisite 10 days past his symptoms’ start. Then, fearful of passing the pathogen to his family, he tacked on one more day, before venturing upstairs on the 17th, still in a mask.

Now back to business as usual (at least, by pandemic standards), Russell wonders if he—a young, healthy, boosted individual—could have ended his saga sooner. His post-vaccination infection, like so many others, wasn’t medically dangerous, and may not have even posed a transmission threat. By the time his isolation started, he was feeling totally